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#880 - 731 - Dark green. 
- Sold Winning Bid: $425.00
- 7 Bid(s) View Bid History
- Lot # 880
- System ID # 326951
- End Date
- Start Date
#880 731 Unmarked. Dark green.
The 731 was one of numerous threadless types which were known as the "compromise" style insulator, which was introduced in 1865. It was described in contemporary articles as being a combination of an egg and hat style insulator. The concave skirt was the key feature of the design.
Typically, unmarked 731 are found in various shades of aqua glass, the dark green units being much scarcer. This particular example has a density that passes a little light through the skirt in window lighting.
Two tight, internal fractures extend up from the base only about one inch. Otherwise, a narrow, one inch, very shallow base chip. Insulator has a sparkling, shiny surface.
Dick Bowman collection.